CN101046617A - Projector liquid crystal cooling mechanism with wind outlet muffling net - Google Patents
Projector liquid crystal cooling mechanism with wind outlet muffling net Download PDFInfo
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- CN101046617A CN101046617A CN 200610025084 CN200610025084A CN101046617A CN 101046617 A CN101046617 A CN 101046617A CN 200610025084 CN200610025084 CN 200610025084 CN 200610025084 A CN200610025084 A CN 200610025084A CN 101046617 A CN101046617 A CN 101046617A
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- liquid crystal
- noise elimination
- crystal board
- heat dissipation
- silk screen
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Abstract
The projector liquid crystal cooling mechanism with wind outlet muffling net includes heat dissipating fans and corresponding wind channels, and muffling nets mounted in the wind outlets of the heat dissipating fans. The muffling net comprises at least two layers of metal or nylon wire net in different density. The projector liquid crystal cooling mechanism has greatly reduced noise, capacity of silencing work environment and raised projector use effect.
Description
Technical field
The present invention relates to a kind of projector, relate in particular to a kind of projecting camera LCD cooling down mechanism that wind is eliminated the noise and netted of taking out of.
Background technology
Projector is widely used in education, commerce and the family.Common projector generally comprises a housing and is arranged on the interior photo engine of housing, circuit board, apparatus for lighting up, light source and corresponding cooling mechanism.According to what of camera lens used in the photo engine, projector can be divided into single-lens projector and tri-lens projector again.Generally all be earlier the white light that light source produced to be isolated red, green, blue three coloured light in design, by three liquid crystal light valves three coloured light are modulated respectively, three coloured light after the modulation are handled with diverse ways according to different mining single-lens or the three-lens design.In single-lens projector, be with closing that color component is synthesized and by the single lens projection imaging with three coloured light.In tri-lens projector, be that three coloured light are projected to imaging on the same screen via three different camera lenses respectively.Wherein single-lens projector has the advantages that volume is little, be convenient for carrying, but its back focal length is longer, and the bore of camera lens requires bigger, and optical modules such as employed camera lens and spectroscope are very high to the requirement of quality, precision, cause cost higher.And tri-lens projector can project big picture in than short distance, and picture brightness and contrast all improve a lot than single-lens projector.
Projector in the course of the work, can produce a large amount of heat, heat is mainly derived from bulb, the energy of bulb is except that a part becomes luminous energy, major part is distributed in projector with the form of heat energy, in addition, the optical element in the photo engine particularly liquid crystal also can absorb a part of impervious light and generate heat.These heats such as untimely leaving can have a strong impact on the operate as normal and the serviceable life of projector.Therefore in projector, all be provided with the heat radiation cooling body, comprise being mainly used in the LCD cooling down mechanism that liquid crystal is cooled off, this LCD cooling down mechanism comprises many radiator fans and corresponding wind channels, is used for the heat that liquid crystal produces is in the course of the work in time left.Cooling mechanism produces another problem again, i.e. noise when solving heat dissipation problem, especially at the air outlet place of fan, can send the sharp-pointed noise that produces by the air-out eddy current, and noise can strengthen along with the raising of rotation speed of the fan, environment for use is caused sound pollution.Generally all there is either large or small noise in the projector of prior art owing to its structural reason.
Summary of the invention
Purpose of the present invention provides a kind of projecting camera LCD cooling down mechanism that wind is eliminated the noise and netted of taking out of exactly in order to address the above problem.
The object of the present invention is achieved like this: a kind of projecting camera LCD cooling down mechanism of taking wind noise elimination net out of, comprise the green glow liquid crystal board radiator fan that is used for cooling off respectively three liquid crystal boards, blue light liquid crystal board radiator fan and ruddiness liquid crystal board radiator fan and green glow liquid crystal board heat dissipation wind channel, blue light liquid crystal board heat dissipation wind channel and ruddiness liquid crystal board heat dissipation wind channel, the air inlet of three heat dissipation wind channels links to each other with the air outlet of three radiator fans respectively, the air outlet of three heat dissipation wind channels is arranged on the below of three liquid crystal boards respectively vertically upward, be characterized in, also comprise the noise elimination net, this noise elimination net is installed on the air outlet of each radiator fan.
Described noise elimination net is made of the silk screen of two-layer above different densities.
In the described two-layer above silk screen, the density of each layer silk screen is respectively the 1-300 order.
Distance between described each layer silk screen is controlled at 0.2-4mm.
Described silk screen is wire gauze or nylon mesh.
The present invention takes the projecting camera LCD cooling down mechanism of wind noise elimination net out of owing to installed the noise elimination net of being made up of multi-layer silk screen additional on the air outlet of each radiator fan, greatly reduce the noise that is produced when fan runs up, thereby purified working environment, improved the result of use of projector.
Description of drawings
Fig. 1 is the structural representation that the present invention takes the projecting camera LCD cooling down mechanism of wind noise elimination net out of;
Fig. 2 is a structure front elevation of taking the fan of wind noise elimination net among the present invention out of;
Fig. 3 is the structure side view of fan shown in Figure 2.
Embodiment
Referring to Fig. 1, the present invention takes the eliminate the noise projecting camera LCD cooling down mechanism of net of wind out of, is arranged in the housing of projector, is mainly used in being installed in the cooling of dispelling the heat of green glow liquid crystal board, ruddiness liquid crystal board and blue light liquid crystal board in the housing.This LCD cooling down mechanism comprises green glow liquid crystal board radiator fan 11, blue light liquid crystal board radiator fan 21 and ruddiness liquid crystal board radiator fan 31, green glow liquid crystal board heat dissipation wind channel 12, blue light liquid crystal board heat dissipation wind channel 22 and ruddiness liquid crystal board heat dissipation wind channel 32 as shown in Figure 1.The air inlet 121,221,321 of three heat dissipation wind channels links to each other with the air outlet of three radiator fans respectively, and the air outlet 122,222,322 of three heat dissipation wind channels is arranged on the below of three liquid crystal boards (not shown liquid crystal board) respectively vertically upward.Wherein, green glow liquid crystal board radiator fan 11 and the green glow liquid crystal board heat dissipation wind channel 12 that connects thereof are arranged on the back of green glow liquid crystal board, blue light liquid crystal board radiator fan 21 and the blue light liquid crystal board heat dissipation wind channel 22 that connects thereof are arranged on the back of blue light liquid crystal board, the two all is closely horizontal air intake, vertical air-out.And ruddiness liquid crystal board radiator fan 31 is arranged on the right of whole electro-optic modulation arrangement, the below that the ruddiness liquid crystal board heat dissipation wind channel 32 of its connection is arranged on the front of whole electro-optic modulation arrangement and passes projection lens bends towards the ruddiness liquid crystal board, remote inclination air intake, vertical air-out.Shown in Fig. 1,41 is polarization converter heat dissipation wind channel 41, and the air inlet 411 of this heat dissipation wind channel 41 links to each other with ruddiness liquid crystal board heat dissipation wind channel 32, and the air outlet 412 of this heat dissipation wind channel is towards the polarization converter (not shown).
Referring to Fig. 2, Fig. 3, on the air outlet 2 of each radiator fan 1 among the present invention noise elimination net 3 is installed all.This noise elimination net 3 can be made of the wire gauze and/or the nylon mesh of two-layer above different densities, and the density of each layer silk screen is respectively the 1-300 order, and the distance between each layer silk screen is controlled at 0.2-4mm.Adopt four layers of silk screen in the present embodiment, wherein the 1st layer (innermost layer) employing density is 10 purpose wire gauzes, and the 2nd layer is adopted density is 20 purpose nylon mesh, and the 3rd layer is adopted density is 15 purpose wire gauzes, and it is 30 purpose nylon mesh that outermost layer adopts density.Distance between each silk screen is controlled at 1-1.5mm.
The present invention takes the multi-layer silk screen of the different densities that is adopted in the projecting camera LCD cooling down mechanism of wind noise elimination net out of, can improve the air-out eddy current, play the effect that changes and disperse the frequency of air-out, thereby can effectively reduce the noise that air-out produces in the air outlet place, play good noise elimination effect.
Claims (5)
1, a kind of projecting camera LCD cooling down mechanism of taking wind noise elimination net out of, comprise the green glow liquid crystal board radiator fan that is used for cooling off respectively three liquid crystal boards, blue light liquid crystal board radiator fan and ruddiness liquid crystal board radiator fan and green glow liquid crystal board heat dissipation wind channel, blue light liquid crystal board heat dissipation wind channel and ruddiness liquid crystal board heat dissipation wind channel, the air inlet of three heat dissipation wind channels links to each other with the air outlet of three radiator fans respectively, the air outlet of three heat dissipation wind channels is arranged on the below of three liquid crystal boards respectively vertically upward, it is characterized in that: also comprise the noise elimination net, this noise elimination net is installed on the air outlet of each radiator fan.
2, the projecting camera LCD cooling down mechanism of taking wind noise elimination net out of as claimed in claim 1, it is characterized in that: described noise elimination net is made of the silk screen of two-layer above different densities.
3, the projecting camera LCD cooling down mechanism of taking wind noise elimination net out of as claimed in claim 2, it is characterized in that: in the described two-layer above silk screen, the density of each layer silk screen is respectively the 1-300 order.
4, the projecting camera LCD cooling down mechanism of taking wind noise elimination net out of as claimed in claim 1, it is characterized in that: the distance between described each layer silk screen is controlled at 0.2-4mm.
5, the projecting camera LCD cooling down mechanism of taking wind noise elimination net out of as claimed in claim 1, it is characterized in that: described silk screen is wire gauze or nylon mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610025084 CN101046617A (en) | 2006-03-27 | 2006-03-27 | Projector liquid crystal cooling mechanism with wind outlet muffling net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610025084 CN101046617A (en) | 2006-03-27 | 2006-03-27 | Projector liquid crystal cooling mechanism with wind outlet muffling net |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101046617A true CN101046617A (en) | 2007-10-03 |
Family
ID=38771329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610025084 Pending CN101046617A (en) | 2006-03-27 | 2006-03-27 | Projector liquid crystal cooling mechanism with wind outlet muffling net |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101046617A (en) |
-
2006
- 2006-03-27 CN CN 200610025084 patent/CN101046617A/en active Pending
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |